APA

Zimmermann C. L., Cook T. M., Bravard M. S., Hansen M. M., Honomichl R. T., Karns S. T., Lammers M. A., Steele S. A., Yunker L. K. & Zebrowski R. M. (19940519). Effects of stair-stepping exercise direction and cadence on EMG activity of selected lower extremity muscle groups. : The Journal of orthopaedic and sports physical therapy.

Chicago

Zimmermann C L, Cook T M, Bravard M S, Hansen M M, Honomichl R T, Karns S T, Lammers M A, Steele S A, Yunker L K and Zebrowski R M. 19940519. Effects of stair-stepping exercise direction and cadence on EMG activity of selected lower extremity muscle groups. : The Journal of orthopaedic and sports physical therapy.

Harvard

Zimmermann C. L., Cook T. M., Bravard M. S., Hansen M. M., Honomichl R. T., Karns S. T., Lammers M. A., Steele S. A., Yunker L. K. and Zebrowski R. M. (19940519). Effects of stair-stepping exercise direction and cadence on EMG activity of selected lower extremity muscle groups. : The Journal of orthopaedic and sports physical therapy.

MLA

Zimmermann C L, Cook T M, Bravard M S, Hansen M M, Honomichl R T, Karns S T, Lammers M A, Steele S A, Yunker L K and Zebrowski R M. Effects of stair-stepping exercise direction and cadence on EMG activity of selected lower extremity muscle groups. : The Journal of orthopaedic and sports physical therapy. 19940519.